[RFC,05/10] tools: Add <endian.h> libc support for unaligned references

Commit Message

H. Peter Anvin June 10, 2014, 11:13 p.m. UTC

Add support for the <endian.h> byteswap macros for unaligned
references.

Signed-off-by: H. Peter Anvin <[e-mail]>
---
 tools/include/tools/unaligned/be_endian.h | 40 +++++++++++++++++++++++++++++++
 tools/include/tools/unaligned/le_endian.h | 40 +++++++++++++++++++++++++++++++
 2 files changed, 80 insertions(+)
 create mode 100644 tools/include/tools/unaligned/be_endian.h
 create mode 100644 tools/include/tools/unaligned/le_endian.h

Patch

diff --git a/tools/include/tools/unaligned/be_endian.h b/tools/include/tools/unaligned/be_endian.h
new file mode 100644
index 000000000000..4106c082855e
--- /dev/null
+++ b/tools/include/tools/unaligned/be_endian.h
@@ -0,0 +1,40 @@ 
+#ifndef _TOOLS_BE_ENDIAN_H
+#define _TOOLS_BE_ENDIAN_H
+
+#ifndef _BSD_SOURCE
+# define _BSD_SOURCE 1
+#endif
+#include <endian.h>
+#include <stdint.h>
+
+static inline uint16_t get_unaligned_be16(const void *_p)
+{
+	return be16toh(get_unaligned_le16(_p));
+}
+
+static inline uint32_t get_unaligned_be32(const void *_p)
+{
+	return be32toh(get_unaligned_le32(_p));
+}
+
+static inline uint64_t get_unaligned_be64(const void *_p)
+{
+	return be64toh(get_unaligned_le64(_p));
+}
+
+static inline void put_unaligned_be16(uint16_t val, void *_p)
+{
+	put_unaligned_le16(htobe16(val), _p);
+}
+
+static inline void put_unaligned_be32(uint32_t val, void *_p)
+{
+	put_unaligned_le32(htobe32(val), _p);
+}
+
+static inline void put_unaligned_be64(uint64_t val, void *_p)
+{
+	put_unaligned_le64(htobe64(val), _p);
+}
+
+#endif /* _TOOLS_BE_ENDIAN_H */
diff --git a/tools/include/tools/unaligned/le_endian.h b/tools/include/tools/unaligned/le_endian.h
new file mode 100644
index 000000000000..0429f1b29250
--- /dev/null
+++ b/tools/include/tools/unaligned/le_endian.h
@@ -0,0 +1,40 @@ 
+#ifndef _TOOLS_LE_ENDIAN_H
+#define _TOOLS_LE_ENDIAN_H
+
+#ifndef _BSD_SOURCE
+# define _BSD_SOURCE 1
+#endif
+#include <endian.h>
+#include <stdint.h>
+
+static inline uint16_t get_unaligned_le16(const void *_p)
+{
+	return le16toh(get_unaligned_be16(_p));
+}
+
+static inline uint32_t get_unaligned_le32(const void *_p)
+{
+	return le32toh(get_unaligned_be32(_p));
+}
+
+static inline uint64_t get_unaligned_le64(const void *_p)
+{
+	return le64toh(get_unaligned_be64(_p));
+}
+
+static inline void put_unaligned_le16(uint16_t val, void *_p)
+{
+	put_unaligned_be16(htole16(val), _p);
+}
+
+static inline void put_unaligned_le32(uint32_t val, void *_p)
+{
+	put_unaligned_be32(htole32(val), _p);
+}
+
+static inline void put_unaligned_le64(uint64_t val, void *_p)
+{
+	put_unaligned_be64(htole64(val), _p);
+}
+
+#endif /* _TOOLS_LE_ENDIAN_H */